https://crataegus.com//?s=wisteria
If you use his link as he posted it, you have to go input 'wisteria' in the search box you have to bring up. So here's a more direct listing of 'wisteria' as topic from that sight. It applies to the Asian species (which seems to be what most of you have) but not to mine. The variety is supposed to be easy blooming every year. If blooming is important to you and you just can't get yours to do it, you may want to change species and try getting a hold of 'Amethyst Falls' or another of the American cultivars. There's something to be said though for accepting the challenge of the Asian species (Chinese or Japanese) and the satisfaction if you can get it right, year after year. So, it's a choice. I hope it works though because I still want a Chinese wisteria too.
Specifically to encourage a non-blooming wistera, this article from that site may be useful:
https://crataegus.com/2012/01/06/why-wont-my-wisteria-bloom/